An inner rotor fan is an electric-powered motor that drives a hard- Hangzhou Chaotuo Electric Automation Co., Ltd.

An inner rotor fan is an electric-powered motor that drives a hard

2023-11-29

An inner rotor fan is an electric-powered motor that drives a hard and fast fan blade to generate a drift of air or gas. The inner rotor fans range from external rotor axial fans in that the rotor of an inner rotor fan is installed within the stator, permitting the motor to be constructed a good deal smaller and additionally permitting it to perform at higher speeds. This sort of fan is frequently utilized in packages wherein an excessive degree of airflow and/or strain management is required, such as in cleanrooms or factories.

An example of an internal rotor fan is proven in FIGS 5 and 6. The rotor assembly consists of a positioning cylinder which is a hole, is mounted beneath the inner rotor, and has a pinnacle board, a sidewall, and a mounting hole. The positioning cylinder is designed to save you relative lateral motion between the inner and outer rotors. The cylinder also supports the magnetic ring and allows for keep rotational balance of the rotor.

The magnetic ring of the inner rotor fan is a plastic magnetic ring 54, which is a product of magnetic powder and plastic that have been combined. Before the plastic is solidified, a magnetic discipline is carried out to the magnetic powder, causing the magnets within the magnetic ring to be arranged in a selected arrangement. This arrangement generates a predetermined magnetic field whilst strength is applied to the coil 33 and the rotor 50.

In operation, the power control unit five, which is electrically related to the coils 23 of the stator 2, receives control cutting-edge from a DC strength source and outputs the control current via the coils 23. The manipulated contemporary magnetizes the magnetic pole faces 221 of each pole 22 right into a magnetic field that creates a repulsive pressure with the everlasting magnet 32 of the rotor, therefore using the rotor three to rotate.

As the dimensions of electronic devices become increasingly compact, the blades of traditional plastic fan rotors are thinned to reduce the overall dimensions of the device. However, the thinned blades are susceptible and fragile and can snap when the fan rotor is circled at a high pace. As a result, the rotor of an inner rotor centrifugal fan is regularly made from steel to ensure strength and durability.

The invention gives an inner rotor fan that is less costly to manufacture than traditional steel-based enthusiasts, and that gives extended rotational balance. The embodiment excludes a magnetic area shielding detail positioned among the magnetic ring and the shaft, which can decrease manufacturing value even as it improves the rotational balance of the rotor. Additionally, the embodiment no longer requires a further steel ring disposed on an inner wall 542 of the magnetic ring, which could in addition lower the manufacturing fee and improve rotational stability. Moreover, the retaining tube 53 and the hub fifty-one have identical materials, which allows for the keeping tube to be easily fashioned as a single piece with the hub.